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| 1 | Enhanced allelopathy and competitive ability of invasive plant Solidago canadensis in its introduced range显示文摘Aims Why invasive plants are more competitive in their introduced range than native range is still an unanswered question in plant invasion ecology.Here,we used the model invasive plant Solidago canaden-sis to test a hypothesis that enhanced production of allelopathic compounds results in greater competitive ability of invasive plants in the invaded range rather than in the native range.We also exam-ined the degree to which the allelopathy contributes increased com-petitive ability of S.canadensis in the invaded range.Methods We compared allelochemical production by S.canadensis growing in its native area(the USA)and invaded area(China)and also by populations that were collected from the two countries and grown together in a'common garden'greenhouse experiment.We also tested the allelopathic effects of S.canadensis collected from either the USA or China on the germination of Kummerowia striata(a native plant in China).Finally,we conducted a common garden,greenhouse experiment in which K.striata was grown in monocul-ture or with S.canadensis from the USA or China to test the effects of allopathy on plant-plant competition with suitable controls such as adding activated carbon to the soil to absorb the allelochemicals and thereby eliminating any corresponding allopathic effects.Important findings Allelochemical contents(total phenolics,total flavones and total saponins)and allelopathic effects were greater in S.canadensis sampled from China than those from the USA as demonstrated in a field survey and a common garden experiment.Inhibition of K.stri-ata germination using S.canadensis extracts or previously grown in soil was greater using samples from China than from the USA.The competitive ability of S.canadensis against K.striata was also greater for plants originating from China than those from the USA.Allelopathy could explain about 46%of the difference.These find-ings demonstrated that S.canadensis has evolved to be more allelo-pathic and competitive in the introduced range and that allelopathy significantly contributes to increased competitiveness for this inva-sive species. | Yongge Yuan Bing Wang Shanshan Zhang Jianjun Tang Cong Tu Shuijin Hu Jean W.H.Yong Xin Chen | 2013 | Journal of Plant Ecology2013，6，3： | 15 |
| 2 | 大气CO_2倍增对植物根内AMF群落的影响显示文摘采用环境控制生长室控制CO2浓度的方法,研究了CO2浓度(350—400μmol mol^-1和680—750μmol mol^-1对植物根内丛枝菌根真菌(arbuscular mycorrhizal fungi,AMF)群落的影响。12种宿主植物于CO2浓度不同的生长室栽培180d后收获取样,通过CTAB法提取共生菌根内丛枝菌根真菌的DNA,由特异引物U1/U2扩增编码核糖体28S大亚基的rDNA部分序列,并进行DGGE电泳分析。结果表明。12种植物根内的AMF存在特异的AMF类群(unique species group,US)和共有类群(common species group,CS),而且CO2浓度倍增使US减少而CS增加。与350μmol mol^-1 对照相比,700μmol mol^-1处理的玉米、刺苋、大豆、陆稻、无芒稗、黑麦草6种植物的AMF群落多样性下降,下降幅度分别达27.12%、16.84%、10.12%、8.62%、8.58%和2.67%;白车轴、牛筋草、早熟禾、鼠曲草、野燕麦、北美车前6种植物的AMF群落多样性上升,分别达76.26%、28.50%、17.60%、15.08%、1.46%和0.96%。CO2倍增处理后12种植物的AMF多样性平均指数略呈上升趋势。研究指出未来环境变化(如CO2增加)将影响AMF群落结构从而影响菌根共生体的形成。 | 杨如意 唐建军 陈欣 陈静 蒋琦清 Shuijin HU | 2006 | 生态学报2006，26，1： | 9 |
| 3 | Soil microbial biomass and activity in organic tomato farming systems: Effects of organic inputs and straw mulching显示文摘 | Cong Tu Jean B. Ristaino Shuijin Hu | 2005 | Soil Biology and Biochemistry2005，，2： | 2 |
| 4 | Long-term impact of farming practices on soil organic carbon and nitrogen pools and microbial biomass and activity显示文摘 | Yi Wang Cong Tu Lei Cheng Chunyue Li Laura F. Gentry Greg D. Hoyt Xingchang Zhang Shuijin Hu | 2011 | Soil & Tillage Research2011，，： | 1 |
| 5 | Soil microbial biomass and activity in organic tomato farming systems:Effects of organic inputs and straw mulching显示文摘 | Cong Tu Jean B Ristaino Shuijin Hu | 2006 | Soil Biology & Biochemistry2006，38，： | 1 |
| 6 | Effect of organic, sustainable, and conventional management strategies in grower fields on soil physical, chemical, and biological factors and the incidence of Southern blight显示文摘 | Liu Bo Cong Tu Hu Shuijin | 2007 | Applied Soil Ecology2007，37，3： | 1 |
| 7 | Effect of organic, sustainable, and conventional management strategies in grower fields on soil physical, chemical, and biological factors and the incidence of Southern blight显示文摘 | BO LIU CONG TU SHUIJIN HU | 2007 | Applied Soil Ecology2007，37，： | 1 |
| 8 | Can the scaling of plant nitrogen to phosphorus be altered by global change? An empirical test显示文摘全球变化可能引起土壤中各种养分的供应失衡,进而导致陆地植物中氮(N)和磷(P)元素化学计量学的不平衡。前人的研究报道了全球变化因子对植物N、P含量和N:P的影响,但鲜有研究探讨全球变化因子是否影响以及如何影响这两种元素之间的异速关系。本研究利用改变降水(增雨和干旱)、增温和N添加处理的野外控制试验,结合异速函数N=βPα(或对数转换后的线性关系:Log N=Logβ+αLog P),检验了中国西北地区黄土高原半干旱草原植物N和P化学计量特征及N和P之间的异速关系对这些全球变化因子的响应。研究结果表明,干旱和增温均降低了植物P浓度,N添加增加了植物N浓度,这些都导致植物N:P增加。干旱、增温和N添加没有显著改变植物N和P浓度之间异速关系的斜率(即N和P浓度对数转换后的线性关系斜率α),但是显著增加了其截距(Logβ)。这些结果表明,全球变化因子可能不会影响植物N和P之间的协同变化关系,植物中N和P之间可能存在着紧密的耦合关系。这些结果将有助于我们更好地理解全球变化背景下的植物养分动态和元素平衡。 | Min Long Juanjuan Zhang Zhengyi Liu Luyao Zhou Fanglong Su Rui Xiao Yi Wang Hui Guo Shuijin Hu | 2020 | Journal of Plant Ecology2020，13，4： | 0 |
| 9 | The grassland carbon cycle:Mechanisms,responses to global changes,and potential contribution to carbon neutrality显示文摘Grassland is one of the largest terrestrial biomes,providing critical ecosystem services such as food production,biodiversity conservation,and climate change mitigation.Global climate change and land-use intensification have been causing grassland degradation and desertification worldwide.As one of the primary medium for ecosystem energy flow and biogeochemical cycling,grassland carbon(C)cycling is the most fundamental process for maintaining ecosystem services.In this review,we first summarize recent advances in our understanding of the mechanisms underpinning spatial and temporal patterns of the grassland C cycle,discuss the importance of grasslands in regulating inter-and intra-annual variations in global C fluxes,and explore the previously unappreciated complexity in abiotic processes controlling the grassland C balance,including soil inorganic C accumulation,photochemical and thermal degradation,and wind erosion.We also discuss how climate and land-use changes could alter the grassland C balance by modifying the water budget,nutrient cycling and additional plant and soil processes.Further,we examine why and how increasing aridity and improper land use may induce significant losses in grassland C stocks.Finally,we identify several priorities for future grassland C research,including improving understanding of abiotic processes in the grassland C cycle,strengthening monitoring of grassland C dynamics by integrating ground inventory,flux monitoring,and modern remote sensing techniques,and selecting appropriate plant species combinations with suitable traits and strong resistance to climate fluctuations,which would help design sustainable grassland restoration strategies in a changing climate. | Lingli Liu Emma J.Sayer Meifeng Deng Ping Li Weixing Liu Xin Wang Sen Yang Junsheng Huang Jie Luo Yanjun Su JoséM.Grünzweig Lin Jiang Shuijin Hu Shilong Piao | 2023 | Fundamental Research2023，3，2： | 0 |
| 10 | Climate warming suppresses abundant soil fungal taxa and reduces soil carbon efflux in a semi-arid grassland显示文摘Soil microorganisms critically affect the ecosystem carbon(C)balance and C-climate feedback by directly controlling organic C decomposition and indirectly regulating nutrient availability for plant C fixation.However,the effects of climate change drivers such as warming,precipitation change on soil microbial communities,and C dynamics remain poorly understood.Using a long-term field warming and precipitation manipulation in a semi-arid grassland on the Loess Plateau and a complementary incubation experiment,here we show that warming and rainfall reduction differentially affect the abundance and composition of bacteria and fungi,and soil C efflux.Warming significantly reduced the abundance of fungi but not bacteria,increasing the relative dominance of bacteria in the soil microbial community.In particular,warming shifted the community composition of abundant fungi in favor of oligotrophic Capnodiales and Hypocreales over potential saprotroph Archaeorhizomycetales.Also,precipitation reduction increased soil total microbial biomass but did not significantly affect the abundance or diversity of bacteria.Furthermore,the community composition of abundant,but not rare,soil fungi was significantly correlated with soil CO_(2) efflux.Our findings suggest that alterations in the fungal community composition,in response to changes in soil C and moisture,dominate the microbial responses to climate change and thus control soil C dynamics in semi-arid grasslands. | Yunpeng Qiu Kangcheng Zhang Yunfeng Zhao Yexin Zhao Bianbian Wang Yi Wang Tangqing He Xinyu Xu Tongshuo Bai Yi Zhang Shuijin Hu | 2023 | mLife2023，2，4： | 0 |
| 11 | Physiological and Biochemical Characteristics and Response Patterns of Salinity Stress Responsive Genes (SSRGs) in Wild Quinoa (Chenopodium quinoa L.)显示文摘Cultivating salt-tolerant crops is a feasible way to effectively utilize saline-alkali land and solve the problem of underutilization of saline soils.Quinoa,a protein-comprehensive cereal in the plant kingdom,is an exceptional crop in terms of salt stress tolerance level.It seems an excellent model for the exploration of salt-tolerance mechanisms and cultivation of salt-tolerant germplasms.In this study,the seeds and seedlings of the quinoa cultivar Shelly were treated with different concentrations of NaCl solution.The physiological,biochemical characteristics and agronomic traits were investigated,and the response patterns of three salt stress-responsive genes(SSRGs)in quinoa were determined by real-time PCR.The optimum level of stress tolerance of quinoa cultivar Shelly was found in the range of 250–350 mM concentration of NaCl.Salt stress significantly induced expression of superoxide dismutase(SOD),peroxidase(POD),and particularly betaine aldehyde dehydrogenase(BADH).BADH was discovered to be more sensitive to salt stress and played an important role in the salt stress tolerance of quinoa seedlings,particularly at high NaCl concentrations,as it displayed upregulation until 24 h under 100 mM salt treatment.Moreover,it showed upregulation until 12 h under 250 mM salt stress.Taken together,these results suggest that BADH played an essential role in the salt-tolerance mechanism of quinoa.Based on the expression level and prompt response induced by NaCl,we suggest that the BADH can be considered as a molecular marker for screening salt-tolerant quinoa germplasm at the early stages of crop development.Salt treatment at different plant ontogeny or at different concentrations had a significant impact on quinoa growth.Therefore,an appropriate treatment approach needs to be chosen rationally in the process of screening salt-tolerant quinoa germplasm,which is useful to the utilization of saline soils.Our study provides a fundamental information to deepen knowledge of the salt tolerance mechanism of quinoa for the development of salt-tolerant germplasm in crop breeding programs. | Yurong Jiang Muhammad Yasir Yuefen Cao Lejia Hu Tongli Yan Shuijin Zhu Guoquan Lu | 2023 | Phyton-International Journal of Experimental Botany2023，92，2： | 0 |
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